<?php

session_start();
class Session {

    public static function has($param0) {
        return array_key_exists($param0, $_SESSION);
    }
    public static function set($key, $value) {
        $_SESSION[$key] = $value;
    }

    public static function get($key) {
        return $_SESSION[$key];
    }

    public static function remove($key) {
        unset ($_SESSION[$key]);
    }

    
}
?>
